Macrozoobenthos as an Indicator of the Level of the Trophy and Saprobity of Lake Jarun

Kerovec, Mladen; Tavčar, Vladimira; Meštrov, Milan

doi:10.1002/aheh.19890170106

Cited by 4 publications

(8 citation statements)

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“…Increased levels of eutrophication are often accompanied by a decline in macroinvertebrate diversity (Donohue et al 2009), an increase in density, and a decrease in wet biomass (mollusks with shells) (Crowns et al 1992, Wollheim and Lovvorn 1995, Gong and Xie 2001, Xiong et al 2003. However, most previous research has been restricted to local-scale studies, i.e., in a single lake or in a few lakes (Saether 1980, Kerovec et al 1989, Gong et al 2000, Xiong et al 2003, Timm et al 2006, and few studies have covered a complete range of nutrient concentrations (Brauns et al 2007a, Donohue et al 2009). …”

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confidence: 99%

Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes

Pan¹,

Wang

Pusch

et al. 2015

Freshwater Science

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The ecological status of subtropical floodplain lakes is threatened by eutrophication, which can shift lakes from a clear, macrophyte-dominated equilibrium state to a turbid, phytoplankton-dominated state. Such a shift is reflected in their macroinvertebrate assemblages, which may serve as good indicators of long-term changes in such lake ecosystems. We conducted a survey of benthic macroinvertebrates in 20 lakes in the Yangtze floodplain that were disconnected from the river channel to identify invertebrate response patterns along a gradient of eutrophication. Macroinvertebrate assemblages changed in parallel to the observed regime shift of a subgroup of those lakes. The most abundant groups were epiphytic invertebrates (e.g., Bithyniidae) in the macrophytedominated lakes and pollution-tolerant invertebrates (e.g., Tubificidae, Tanypus) in the phytoplankton-dominated lakes. Planktonic chlorophyll a concentration and wet biomass of submersed macrophytes were the key factors structuring macroinvertebrate assemblages. Macroinvertebrate taxon richness decreased along the eutrophication gradient, but density reached a minimum at a moderate eutrophication level and then increased. Scraper density (e.g., Bithyniidae) dropped abruptly at the moderate eutrophication level and did not increase again, whereas collector-gatherers (mainly Tubificidae and Chironomidae) and predators (e.g., Tanypus) increased continuously along the eutrophication gradient. We conclude that the abrupt disappearance of macrophytes during the regime shift means the loss of key habitat for biota associated with aquatic plants. Therefore, ecological restoration projects should be designed to reduce the nutrient concentration of floodplain lakes enough to allow re-establishment of a clear-water lake equilibrium dominated by aquatic macrophytes.

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confidence: 99%

Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes

Pan¹,

Wang

Pusch

et al. 2015

Freshwater Science

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“…It is the case with some other aquatic ecosystems -in Serbia: Obedska Bara marsh, Sava Lake, lakes Palic and Ludos, and Zobnatica reservoir; and -in Croatia Lake Jarun. The difference between them refers to their origin; Obedska Bara marsh is a natural system originating by the Sava River flooding, lakes Ludos and Palic are primarily swamps of Aeolian origin before the water regulation system in the area, while Lake Srebrno, Sava Lake, Zobnatica reservoir and Lake Jarun are artificial lakes (Martinovic-Vitanovic, 1996;Martinovic-Vitanovic, Kalafatic, 1999;, 2009/2010Selesi, 1979;Kerovec et al, 1989).…”

Section: Discussionmentioning

confidence: 99%

“…Preliminary study of this lake conducted in August and October 2006, included analyses of plankton and physical and chemical water characteristics, and Chl-a concentration analyses, with the aim to assess trophic status of the reservoir . Detailed limnological study of the Lake Srebrno performed in March 2007, with special emphasis on the benthic community, deal with the presence of bottom fauna species, their life cycles and relations between other members of the ecosystem having been the subject of previous studies of stagnant waters, lowland lakes formed in large river valleys: Obedska Bara marsh and Sava Lake (Jankovic, 1967(Jankovic, , 1974(Jankovic, , 1982Jakovcev, 1989;Martinovic-Vitanovic, 1996;Martinovic-Vitanovic, Kalafatic, 1999;, 2009/2010 in Serbia, and Lake Jarun in Croatia (Kerovec et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

“…Species composition, their occurrence frequencies in benthic communities as well as quantitative aspect of assemblages are used as basis for the characterisation and assessment of the freshwater body ecological status (Chapman, 1997). Representatives of the groups Chironomidae, Chaoboridae and Oligochaeta found in Lake Srebrno bottom fauna (dominant in bottom fauna of the Obedska Bara marsh, according to Jankovic, 1967) are important indicators for pollution level and trophy of continental waters (Kerovec et al, 1989;Dévai, 1990;Specziar, Biro, 1998;Timm, 1999;Moog, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Limnological study of Serbian oxbow shaped Lake Srebrno, with special emphasis on the benthic community composition and structure

Martinovic-Vitanovic¹,

Ostojić²,

Popović³

et al. 2013

Ekologia

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Detailed limnological study of the Lake Srebrno (Serbia) bottom fauna was performed in March 2007. Investigations included qualitative, quantitative, and saprobiological analysis of bottom fauna communities, physical and chemical analysis of sediments and determination of chlorophyll a concentration, as well as saprobic and trophic status analyses. Samples were collected at eighteen sites distributed along a shoreline and in deeper sections of the lake. Twenty taxa from nine macroinvertebrate groups were recorded. Family Chironomidae had the biggest index of participation, the highest species diversity and the largest density of populations in benthocenoses of Lake Srebrno. Faunistic similarity between sites was estimated according to Sorensen’s Quotient of Similarity (QS). The majority of benthocenoses - 56% showed a medium level of faunistic similarity (QS = 21-60%), and 42% of benthocenoses showed a high level of faunistic similarity (QS = 61-100%). The classification of Lake Srebrno based on saprobic and trophic levels was assessed. Saprobic level was in the range from alpha-meso- to poly-alpha-mesosaprobity. The water quality of the lake ranged from class III and between IV and III class. Generally, Lake Srebrno had eutrophic status with the gradation to hypertrophy.

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“…In Croatia, B. sowerbyi was found for the first time in 1954 in Varaždin's thermal stream (Matoničkin, 1957) and the following year in the lake of the Botanical garden, Faculty of Science, University of Zagreb (Devide, 1956). B. sowerbyi was later found in the artificial lake Jarun near Zagreb (Kerovec et al 1989), the lower course of the Krapina River north of Zagreb and in the hydroelectric power plant reservoir on the Drava River near Varaždin (Mihaljević et al, 2007;Kerovec et al, 2016). Since the beginning of 21 st century, intensive monitoring and freshwater research according EU Water framework directive requirements were conducted on all types of water bodies in Croatia, yielding new data and evidence on the growing distribution of this species.…”

Section: Introductionmentioning

confidence: 99%

Notes and new data on the distribution of a non-native oligochaete: Branchiura sowerbyi (Beddard, 1892) in Croatia

et al. 2019

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The freshwater oligochaete Branchiura sowerbyi is indigenous to southeast Asia, but can be found inhabiting most of Europe. This tubificid was even described for the first time outside of its natural area of occurrence: in the garden of the Royal Botanic Society in London. It has spread over all continents except Antarctica, and in Europe it has been found in 23 countries. The presence of this non-native species may affect other species' relationships in the benthic community and thus have substantial effects on food webs of aquatic ecosystems. Our goal was to present the first comprehensive overview of the distribution of this potentially invasive species in Croatia as a basis for the future monitoring of the species distribution. In Croatia, B. sowerbyi was found for the first time in 1954 in Varaždin's thermal stream and the following year in the lake of the Botanical garden, Faculty of Science, University of Zagreb. To date, B. sowerbyi individuals were found on 64 different sites in Croatia, mostly occupying the Pannonian Lowland Ecoregion (ER 11) with only two findings in the Dinaric Western Balkan Ecoregion (ER 5). Vučković, N., Pozojević, I., Kerovec, M., Dorić, V. & Mihaljević, Z.: Pregled istraživanja i novi nalazi rasprostranjenosti alohtonog maločetinaša Branchiura sowerbyi u Hrvatskoj. Nat. Croat., Vol. 28, No. 2., 455-462, Zagreb, 2019. Prirodni areal rasprostiranja vrste Branchiura sowerbyi je jugoistočna Azija, no ovaj se maločetinaš može pronaći u slatkovodnim ekosustavima diljem Europe. Čak je i prvi opis ove vrste tubificida bio izvan njegovog prirodnog areala rasprostiranja, točnije u botaničkom vrtu "Royal Botanic Society" u Londonu. Ova vrsta danas je prisutna na svim kontinentima osim Antartike, a u Europi je zabilježena u 23 zemlje. Prisustvo ove alohtone vrste može imati još neutvrđene implikacije na zajednice slatkovodnih makroskopskih beskralježnjaka, kao i na funkcioniranje hranidbenih mreža unutar ovih zajednica. Cilj ovog rada bio je izraditi sveobuhvatan pregled distribucije ove vrste na području Hrvatske kao bazu za buduće nadziranje širenja te vrste. U Hrvatskoj je vrsta B. sowerbyi nađena prvi put 1954. godine u termalnom potoku u Varaždinu, a već sljedeće godine pronađena je u Botaničkom vrtu Sveučilišta u Zagrebu. Dosad je vrsta zabilježena na 64 različite lokacije na području Hrvatske, većinom u Panonskoj ekoregiji (ER 11), dok je u Dinaridskoj ekoregiji (ER 5) dosad zabilježena na samo dvije lokacije.

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Macrozoobenthos as an Indicator of the Level of the Trophy and Saprobity of Lake Jarun

Cited by 4 publications

References 8 publications

Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes

Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes

Limnological study of Serbian oxbow shaped Lake Srebrno, with special emphasis on the benthic community composition and structure

Notes and new data on the distribution of a non-native oligochaete: Branchiura sowerbyi (Beddard, 1892) in Croatia

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